Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c34a0378d79c874…

MALICIOUS

PDF

83.5 KB Created: 2021-05-15 00:36:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: a2384600eb0482c64287956cd981c509 SHA-1: 17e07a25a887a4edafd9ef31079fdb87e2ba0d8b SHA-256: 9c34a0378d79c874c04653aceb837cae3f85ca383ad04838df78c6f27bea5870
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a large number of external links, many of which are on disposable hosting and utilize UTM parameters, indicating a link farm designed to direct users to potentially malicious sites. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or a scam. While no scripts were directly extracted, the PDF structure and embedded URLs point towards a malicious document designed to trick users into visiting external, untrusted resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9954

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://lozipotod.ru/strik?utm_term=ipad+mini+5+release+price PDF link annotation
    • https://cdn.sqhk.co/mekekomubun/ijdMbjc/vacation_countdown_app_for_android.pdfIn PDF document text
    • https://cdn.sqhk.co/tavikalamo/dBFjjTW/49581974900.pdfIn PDF document text
    • https://cdn.sqhk.co/jilanukubok/Qazahi7/navy_field_jacket_blue.pdfIn PDF document text
    • http://aarbuz.space/remove_duplicate_google_sheetsogjfl.pdfIn PDF document text
    • http://titanof-filtr.ru/240204106524o72y.pdfIn PDF document text
    • http://academic-club.ru/44293046813u7vrs.pdfIn PDF document text
    • http://brightshopbg.xyz/tascam_388_price6uiwj.pdfIn PDF document text
    • https://cdn.sqhk.co/metexemoraga/fhbibeV/planet_fitness_black_card_worth_it.pdfIn PDF document text
    • https://cdn.sqhk.co/gorokipo/x7qhgU7/wedding_salon_2_mod_apk_free_download.pdfIn PDF document text
    • http://nuveclovet.xyz/geometric_transformations_rotation_rulesjtvxj.pdfIn PDF document text
    • https://cdn.sqhk.co/jusulikipe/cQhjghg/skyland_resort_wifi.pdfIn PDF document text
    • http://7lessons.website/contoh_form_training_need_analysiswhxhv.pdfIn PDF document text
    • http://changepass.online/ukulele_strumming_patterns_4_4d4fg6.pdfIn PDF document text
    • http://craftsmansmetics.com/how_to_disable_netflix_autoplay_trailersu9pd6.pdfIn PDF document text
    • https://cdn.sqhk.co/jugomuzuteb/hgjehcG/fishdom_game_hacks.pdfIn PDF document text
    • https://cdn.sqhk.co/waxobakal/KOggzH8/dominos_coupons_honey.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/adf8905b-1f1b-4993-be0d-1ef96266b99e/mary_shelley_frankenstein_victor_quotes.pdfIn PDF document text
    • https://8c285b57-3156-47ce-881b-df665acc117b.filesusr.com/ugd/8d46c2_8e33f9c2ea354182a3969363331aeb8b.pdf?index=trueIn PDF document text
    • https://8ab1a2d5-e5b1-44c5-a28c-e09959565f0d.filesusr.com/ugd/eb712c_3bea6ca8158740db91043c20ee24323c.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8c07171-b269-4f68-a39f-3ed4a6ce7c5a/vonoxoxagar.pdfIn PDF document text
    • https://e86c6366-0652-46cb-9e1f-5633a133dba9.filesusr.com/ugd/510a18_94baffb28f254709b5c4aa1a846208cc.pdf?index=trueIn PDF document text
    • https://665985ba-8e9f-4173-b993-17a3090d61d7.filesusr.com/ugd/08421c_ada4b0d709f2427cb8e21a6eb06f3c50.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/8edde28c-07b9-4f1e-a4a7-1ad3de6d1bca/dodge_ram_replacement_doors.pdfIn PDF document text
    • https://9005a25f-7293-4a73-bb0f-bc58e8c16807.filesusr.com/ugd/e3834b_8e9145e2c6894cc198d75a1f7d779552.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/59e608c6-1d0b-418e-a7e0-e793e2d51ca8/poroxejitiv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9bd08a22-b5b3-4441-b88e-93986635da02/sword_art_online_fatal_bullet_walkthrough_no_commentary.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f110.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF110 5280 bytes
SHA-256: 44b949c74c8cac1587ef56301a05ffe93ea7ccedd977118b46efc8e756bb1e6a
font_01_sfnt_off000102ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102ED 11604 bytes
SHA-256: c534b883b87e297dd53a034c2cd1aac52bc5cd2345ec8c0a268ffb8753cd00fe
font_02_sfnt_off00012a9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A9F 16192 bytes
SHA-256: 13bf05c00a1cee00238931a2a03bd57d9172ef94cd6b5c373b8281636b230726

Open this report in the interactive analyzer, or submit your own file for analysis.